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Experimental evidence for mobile luminescence center mobility on partial dislocations in 4H-SiC using hyperspectral electroluminescence imaging
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10.1063/1.4810909
/content/aip/journal/apl/102/24/10.1063/1.4810909
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/24/10.1063/1.4810909
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Figures

Image of FIG. 1.
FIG. 1.

Real-color electroluminescence images collected after (a) 210, (b) 260, (c) 360, and (d) 520 s of current injection at 12 A/cm. Images were collected under 0.1 A/cm injection for 5 s exposures.

Image of FIG. 2.
FIG. 2.

Real-color electroluminescence images collected (a) prior to, (b) following 1980 s of current injection at 12 A/cm and (c) following 10 h of annealing at 700 °C in nitrogen atmosphere. The arrows in (c) denote the locations of the residual "scars" observed following the anneal that coincide with the positions of the green partial dislocations following the current injection. (d) Gray-scale image of the green channel from (c). Inset: gray-scale intensity of the line-scans shown in (d).

Image of FIG. 3.
FIG. 3.

Gray-scale intensity along lines in Fig. 2(d) . Peaks denote the residual green emission from the propagated green emitting point defects following annealing-induced contraction of the RISFs.

Image of FIG. 4.
FIG. 4.

(a) RC EL and (b)–(d) hyperspectral EL images collected from the same diode following three successive cycles of current injection at 12 A/cm for ∼2000 s and subsequent 700 °C, 10 h anneals, followed by a final current injection cycle. The images were collected at 1 A/cm for 5 and 30 s for the real-color and hyperspectral EL images, respectively. The hyper spectral images were collected with the 2 nm pass-band centered at (b) 424, (c) 534, and (d) 720 nm, which correspond to the peak emission of RISFs, the green PDs as observed here and the red PD emission. (e) EL spectra extracted from the series of hyper spectral images of this spatial region.

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/content/aip/journal/apl/102/24/10.1063/1.4810909
2013-06-19
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Experimental evidence for mobile luminescence center mobility on partial dislocations in 4H-SiC using hyperspectral electroluminescence imaging
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/24/10.1063/1.4810909
10.1063/1.4810909
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